/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package org.apache.spark.h2o.utils

import java.util.concurrent.ConcurrentHashMap

import org.apache.spark.h2o.Holder

class TestMemory[T] extends ConcurrentHashMap[T, Unit] {
  def put(xh: Holder[T]): Unit = xh.result foreach put

  def put(x: T): Unit = {
    if (this contains x) {
      throw new IllegalStateException(s"Duplicate element $x in test memory")
    }
    put(x, ())
  }
}
